Definitions of genes keywords

Definitions for genetics written on spec (including epistasis and dihybrid cross, which arnt on spec)

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Gene
Section of DNA that controls a characteristic
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Allele
Different forms of the same gene
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Homozygous
Having identical alleles for a single trait
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Hetrozygous
Having two different alleles for a single trait
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Dominant
gene that produces the same phenotype in the organism whether or not its allele identical; "the dominant gene for brown eyes".
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Recessive
gene that produces its characteristic phenotype only when its allele is identical; "the recessive gene for blue eyes".
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Phenotype
The set of observable characteristics of an individual resulting from the interaction of its genotype with the environment.
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Genotype
The genetic constitution of an individual organism.
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Locus
Specific position of a gene on a chromosome
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Co-dominant
Two dominant alleles, neither causes the other not to be expressed (both are expressed) for example, blood type AB
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Homologous chromosomes
chromosome pairs of the same length, centromere position, and staining pattern with genes for the same characteristics at corresponding loci. One homologous chromosome is inherited from the organism's mother, the other from the organism's father.
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F1 generations
First generation down from parents
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F2 generations
Second gene
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Monohybrid cross
Interbreed in realation to tracking one gene
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Test cross
Use known genotype to investigate genotype of individual with dominant phenotype
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Dihybrid cross
Interbreed in realtion to track two genes
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Epistasis
One gene overides expression of another
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Other cards in this set

Card 2

Front

Different forms of the same gene

Back

Allele

Card 3

Front

Having identical alleles for a single trait

Back

Preview of the back of card 3

Card 4

Front

Having two different alleles for a single trait

Back

Preview of the back of card 4

Card 5

Front

gene that produces the same phenotype in the organism whether or not its allele identical; "the dominant gene for brown eyes".

Back

Preview of the back of card 5
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